我非常喜欢React中的内联CSS模式,并决定使用它。
但是,你不能使用:hover和类似的选择器。那么,在使用内联CSS样式时实现高亮悬停的最佳方法是什么呢?
#reactjs的一个建议是有一个Clickable组件,并像这样使用它:
<Clickable>
<Link />
</Clickable>
Clickable有一个悬停状态,并将其作为道具传递给链接。然而,Clickable(我实现它的方式)将链接包装在一个div中,以便它可以设置onMouseEnter和onMouseLeave。这让事情变得有点复杂(例如,在div中包装的span与span的行为不同)。
有没有更简单的方法?
使用钩子:
const useFade = () => {
const [ fade, setFade ] = useState(false);
const onMouseEnter = () => {
setFade(true);
};
const onMouseLeave = () => {
setFade(false);
};
const fadeStyle = !fade ? {
opacity: 1, transition: 'all .2s ease-in-out',
} : {
opacity: .5, transition: 'all .2s ease-in-out',
};
return { fadeStyle, onMouseEnter, onMouseLeave };
};
const ListItem = ({ style }) => {
const { fadeStyle, ...fadeProps } = useFade();
return (
<Paper
style={{...fadeStyle, ...style}}
{...fadeProps}
>
{...}
</Paper>
);
};
我不能100%确定这是否是答案,但这是我用来模拟CSS的技巧:带有颜色和图像的悬停效果。
`This works best with an image`
class TestHover extends React.PureComponent {
render() {
const landingImage = {
"backgroundImage": "url(https://i.dailymail.co.uk/i/pix/2015/09/01/18/2BE1E88B00000578-3218613-image-m-5_1441127035222.jpg)",
"BackgroundColor": "Red", `this can be any color`
"minHeight": "100%",
"backgroundAttachment": "fixed",
"backgroundPosition": "center",
"backgroundRepeat": "no-repeat",
"backgroundSize": "cover",
"opacity": "0.8", `the hove trick is here in the opcaity slightly see through gives the effect when the background color changes`
}
return (
<aside className="menu">
<div className="menu-item">
<div style={landingImage}>SOME TEXT</div>
</div>
</aside>
);
}
}
ReactDOM.render(
<TestHover />,
document.getElementById("root")
);
CSS:
.menu {
top: 2.70em;
bottom: 0px;
width: 100%;
position: absolute;
}
.menu-item {
cursor: pointer;
height: 100%;
font-size: 2em;
line-height: 1.3em;
color: #000;
font-family: "Poppins";
font-style: italic;
font-weight: 800;
text-align: center;
display: flex;
flex-direction: column;
justify-content: center;
}
前徘徊
.menu-item:nth-child(1) {
color: white;
background-color: #001b37;
}
在徘徊
.menu-item:nth-child(1):hover {
color: green;
background-color: white;
}
例如:https://codepen.io/roryfn/pen/dxyYqj?editors=0011